El estudio de los parámetros por medio de tecnologías híbridas

Los estudiantes de enseñanza media se enfrentan al uso e interpretación de los parámetros en funciones polinomiales, lugares geométricos y expresiones algebraicas. Este hecho conduce a la necesidad de diferenciar los parámetros de otro tipo de literales como variables o incógnitas. Esta investigación indaga sobre la influencia que pueden tener dos entornos tecnológicos sobre la comprensión de la polisemia de las literales, bajo el telón de fondo de los Modelos Teóricos Locales y de la Aproximación Instrumental.

Contribuciones de Laplace al desarrollo de la teoría de la probabilidad: en conmemoración de los 200 años de la publicación del "Essai philosophique sur les probabilités" de 1814

En este artículo se analiza la posición que ocupa Laplace en el desarrollo de la teoría clásica de la probabilidad. Se hace en el marco de los 200 años de la publicación del "Essai philosophique sur les probabilités". El artículo se divide en las siguientes secciones: en la primera se introducen algunas de las características de las matemáticas del periodo. En la segunda, se presentan algunos de los desarrollos fundamentales en la teoría de la probabilidad alcanzados durante los siglos XVII y XVIII. Finalmente, presentamos algunas de las principales contribuciones de Laplace. En general, se considera que con Laplace la teoría clásica de la probabilidad adquiere su forma definitiva.

Social Work and theatre: considering intersections

Theatre is a cultural and artistic form that involves a process of communication between creators and is received in a space and time located in the public sphere, which has meant that, over the centuries, it has acted as a space for expression, exchange and debate regarding all manner of ideas, causes and struggles. Implicit within this process are processes of expression, creation and reception, by way of which people demonstrate, analyse and question ways of seeing and understanding life, and ways of being and existing in the world. This gives rise to educational, cultural, social and political potential, which has been endorsed in numerous studies and investigations. In this work, in which theoretical orientation is established through a review of the relevant literature, we consider different intersections that occur between theatre and social work in order to also show that dramatic and theatrical expression offers substantive methodologies for achieving some objectives of social work, particularly in areas such as critical literacy, reflexivity and recognition, awareness raising, social participation, personal and/or community development, ownership of cultural capital and access to personal and social wellbeing.

Micromorphology of lamellae formed in an alluvial soil, Big Pine Tree Archeological Site, South Carolina

The formation of lamellae in soils is not clearly understood. The objectives of this study are to examine the microscopical characteristics of selected well developed lamellae inorder to identify the major processes involved in their formation at the Big Pine Tree Archaeological site on the Savannah River, South Carolina. Well developed lamellae have formed in a fine sandy alluvial soil that is about 11,000 to 12,000 years old. In the field, these lamellae are observed as 1 to 4.2 cm thick horizontal layers having a smooth upper and a wavy, sometimes irregular, lower boundary with adjacent interlamellae horizons. Soil thin sections reveal denser accumulations of brown fine silt and clay coatings in the upper and lower sections of the lamellae. The center of the lamellae has mainly orange highly oriented discontinuous clay coatings bridging quartz grains and some silt accumulations. Although, horizontal layering of denser areas (accumulations of fine silt and clay coatings) is also observed in the middle of the lamellae. The interlamellae horizons are mainly loose quartz grains. Low total carbon values (

Art as an educative and social tool

Since remote times, certain sectors of society have been exposed to inequality and vulnerability, where adequate intervention processes have become conspicuous because of their absence. Nowadays, current societies have the responsibility of contributing, based on their experience and knowledge, with more efficient policies and programs that improve the life quality of the most disadvantaged. It is here where art and its different tools play a very important role, not only on a physical level, but also as an education tool that allows the development of emotional, mental and communicative skills. The aim of this paper is to make clear the potential of art as an instrument of social and educational intervention. It starts by showing worldwide-collected experience related to education and arts, and then, it acquaints the reader with two parallel intervention projects that worked with youths under social vulnerability conditions. These interventions were developed based on a qualitative research (Grounded theory), using as methodology “The Artistic Mediation” with emphasis on body language. This methodology helped researchers to get close to the participants and to know their experiences and emotions. At the same time, it was possible to evidence the positive effects of educative interventions through art. These workshops were based on an artistic methodology especially focused on body language. Data in this work is qualitative, and as such, it permits a special approach to the personal and emotional experiences of the participants; clearly showing the positive effects of the referenced practice on them.

Labor and Place: The Contours of Freedpeoples' Mobilization in Reconstruction South Carolina

Important advances in scholarship on the post-emancipation South have made possible a new synthesis that moves beyond broad generalizations about African American agency to identify both the shared elements in black life across the region and the varying capacity of freedpeople to assert their interests in the face of white hostility. Building on a number of recent studies of Reconstruction this article seeks to demonstrate that the varying capacity of freedpeople in South Carolina to shape and defend the new society that would emerge after the end of slavery was rooted in their relative strength at work and in their communities. In Charleston and its lowcountry rural hinterland, demographic strength combined with deeply-rooted traditions of collective assertion to sustain a remarkably vibrant grassroots movement that persisted beyond the overthrow of Reconstruction. From very early on, by contrast, former slaves dispersed across the rural interior found their freedom severely circumscribed by a bellicose and heavily-armed white paramilitary campaign.

Los nuevos territorios de la gráfica: imagen, proceso y distribución

La gráfica se encuentra en un proceso de simbiosis con la cultura visual en el que la tecnología de la imagen, la descentralización de la matriz y la adaptación del formato expositivo se funden con el resto de las actividades artísticas. El análisis de las comunidades formadas alrededor de esta práctica configura un puzzle, aparentemente bien encajado, que se divide entre el formalismo y el conceptualismo y entre la idea y el proceso. Las bienales y trienales, a la vanguardia del discurso, cuestionan cualquier concepto que se haya podido asentar con solidez: ante la decadencia del proceso artesanal el mensaje se profundiza nutriéndose de la invectiva provocada por las contradicciones sociales, territoriales y medioambientales para convertirse en un reflejo de la sociedad contemporánea. Comprender la gráfica actual pasa por un ejercicio de aperturismo y un proceso de adaptación al cambio técnico e iconográfico de los sectores implicados. El grabado es ahora un territorio en el que la integración de todas las artes permite cruzar sus fronteras con fluidez.

Nationalist Multiculturalism in Late Imperial Austria as a Critique of Contemporary Liberalism: The Case of Bauer and Renner,

This article evaluates Bauer's theory of the nation and the debateon national-cultural autonomy in late imperial Austria. It finds important similarities with contemporary liberal debates on multiculturalism and the rights of ethnic and national minorities. It argues that the debate on national-cultural autonomy went in some respects beyond the contemporary debate on multiculturalism. National-cultural autonomy rejects the idea of the nation-state and proposes instead a multi-nation-state that recognises differential rights for ethnic and national minorities. It seeks to break the limitations of liberal democracy and the territorial principle of the nation-state by organising national communities as deterritorialised national corporations, and multination-states as territorialised non-national identities.